smith



(No Model.)

T. S. SMITH.

Brick Kiln.

No. 236,726. Patented Jan. 18,1881.

FIG. .5.

INVENTOR ATTEST N. PETERS, PHOTO-LITHOGRAPMER, WASHINGTON. n c.

UNTTED STATEs PATENT Unmet;

THADDEUS S. SMITH, OF ST. LOUIS, MISSOURI.

BRICK-KILN.

SPECIFICATION forming part of Letters Patent No. 236,726, dated January 18, 1881. Application filed July 12, 1880. (No model.)

To all whom it may concern Be it known that I, THADDEUS S. SMITH, of St. Louis, in the State of Missouri, have invented certain new and useful Improvements in Brick-Kilns and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification.

This invention relates to certain improvements in that class of brick-kilns in which the top is closed by a suitable covering, underneath which are arranged a series of flues having dampers, by means of which the draft is controlled, and consequently the burning of any desired portion of the kiln.

The object of my invention is to provide a sure and effective means for directing the draft through any part of kiln with more certainty than has heretofore been accomplished, in order that all parts of the same may be burned alike and be under the full control of the burner.

My invention consists in forming a series of longitudinal flues in the top course of bricks and flatting of the kiln, each of which flues is closed by a series of dampers arranged side by side, and extending lengthwise of the kiln and at right angles to the arches. Ordinary bricks laid lengthwise across the flues are preferred as dampers, although any other suitable form of damper may be used. The top of the kiln is covered with a flatting of brick, which is preferably made double, with one course laid so as to break joints with the other course, in order to prevent the escape of heat, &c., at the joints between the bricks. Underneath the flattin g, and between each flue, is arranged a dead-point or close partition extending parallel with said fines the whole length of the kiln, the purpose of which is to prevent a draft taking place from one flue to another through the spaces between the bricks of the top course of the kiln, which, if allowed, would prevent the control of the draft as claimed, as I have found by practical experiment that without such dead-pointer partition as above described the heat would pass directly up from the furnaces through the hottest portion of the kiln being burned, and then along the transverse spaces from flue to flue until it reached an opening through which to escape, and that it was impossible by means of. dampers alone to direct the heat to any required portion of the kiln without the employment of such a provision as the dead-point or partition above described for preventing the heat from passing from flue to flue.

In the accompanying drawings, in which similar letters of reference indicate like parts, Figure 1 is a perspective view, illustrating the application of my invention to an ordinary kiln. Fig. 2 is a detail longitudinal section of the top of kiln. Fig. 3 is a detail top view with v part of the flatting or cover removed.

The kiln A may be of any suitable well known construction, in which the bricks to be burned are set in any suitable manner. The top course, a, of bricks is set so as to leave a series of longitudinal flues, at, extending the whole length of the kiln and at right angles to the arches, and which are cut off from communication with each other through the transverse spaces a" between the bricks of the top course by means of a dead-point or close partition, a of bricks or other suitable material extending longitudinally along the kiln parallel with the tines (1. These partitions a may be arranged either at the inner edge of the flues or midway between the flues, as clearly indicated in the drawings, and they can extend down into the body of the kiln as far as desired;

B is a flatting or closed top for kiln, which has openings 1) into the flues a, which openings are closed by dampers I), which are preferably ordinary bricks laid lengthwise across the openings 1), as clearly indicated in the drawings. The flattin g B is preferably formed of a double course of bricks laid one on top of the other, so as to break joint, although in some cases a single course laid close together may be used.

In use the top course of bricks, a, must be set on their edges and their lengths parallel with the arches, and have narrow spaces a left between each row of bricks, which, by means of the dead-point or partition a are divided into a series of short transverse flues, each of which communicates with and discharges its heated gases, 850., into its longitudinal flue a, and when the dampers of said flue are closed any upward draft through that portion of the kiln under said fine is prevented, and, vice versa, when the dampers are opened a draft will take place through that portion of the kiln under said fines, so that by means of the dead-point or partition (0 ,1 am enabled to burn the whole contents of the kiln evenly throughout into good brick by controlling the draft as needed.

Where it is preferred the fines a may be omitted and the passages or openings 1) be depended on to form solely the longitudinal fines above described.

Having thus fully described my said invention, what I claim, and desire to secure by Letters Patent, is

1. The combination, with a brick-kiln provided with a closed top and a series of fines and dampers, of a dead-point or close partition, (0 arranged between said fines, for the purpose set forth.

THADDEUS S. SMITH.

In presence of ROBERT BURNS, A. U. Hole. 

